Spirit-level.



Patented May 29, |900. L. DESMARAIS.

SPIRIT LEVEL.

(Application led -Nov. 15, 1899.)

(No Model.)

/NVENTOH A TTCHNEYS.

Nrrnn STATES LOUIS DESMARAIS, OF NEIV YORK, N. Y.

SPIRIT-LEVEL'.

SPECIFICATION forming part 0f Letters Patent No. 650,7 51 dated May29,1900. Application filed November 15, 1899. Serial No. 737.110. (Nomodel.)

To @ZZ whom, it may concern:

Be it known that I, LoUIs DnsMARAIs, a subject of the Queen of GreatBritain, and a resident of the city of New York, borough oi' Manhattan,in the county and State of New York, have invented a new and ImprovedSpirit-Level, of which the following is a full, clear, and exactdescription.

This invention relates to improvements in spirit-levelsand plu mb-rules;and th'e object is to provide a device of this character that shall beof simple construction and so arranged that it may be easily takenapartfor repairs or other purposes and as easily assembled or puttogether.

I will describe a spirit-level embodying my invention and then point outthe novel features in the appended claim.

Reference is to be had to the accompanying drawings, forming a part otthis specification, in which similar characters of reference indicatecorresponding parts in all the iigures.

Figure l is a side elevation of a level embodying my invention. Fig. 2is a section on the line 2 2 of Fig. l. Fig. 3 is a section on the line3 3 of Fig. 2. Fig. 4 is a section on the line 4 4 of Fig. 3, and Fig. 5shows the device as arranged for a plumb-rule.

The device comprises a body portion 1, of wood or other suitablematerial, having straight parallel sides, as is usual in theseinstruments. Seated in an opening 2, formed through the body portion, isa metal tube 3 for holding the 'glass 4 for the bulb. The

bulb-glass is here shown as having its endsV extended into plaster orother sealing material 5, placed in opposite outward openings in theside walls of the tube. By this construction a new tube may be easilyinserted in an old tube or ring 3 by removing the plaster,.

putting in the bulb-tube, and then placing in new plaster. Of course ininserting the new bulb-tube in a new ring 3 the same operation takesplace, except that there is no old plaster to remove.

The openings in the side walls of the tube 3 completely surround theside sight-opening and are unobstructed, as shown best in Fig. 3, sothat the bulb-tube may be placed at the bottom or on any side ofthe saidsightopening, or two tubes of suit-able size may be inserted, oneextending at right angles to the other.

The tube or holder 3 has an inner iiange 6, adapted to engage with aninner shoulder '7, formed in the wall of the opening through the bodyportion. As a means for removably holding the part 3 in place I havehere shown screw-bolts 8, which at one end have washers 9`for engagingwith the flange 6, and at the opposite end the screw-bolts are engagedby nuts'l 10. After the device is secured in place, as above described,ring-plates 11 l2 maybe attached to the body portion at opposite sides,as clearly shown in the drawings. The bulbtube may be placed lengthwiseof the body portion when the device is to be used as a spirit-level, orit may be placed transversely of the body portion when the device is tobe usedas aplumb-rule, as shown in Fig. 5, and obviously two or more ofthe tubes 4 may be placed in a single body portion, so that one toolwill serve both as aleveling and a plumbing instrument.

Forconvenienoe a sight-hole may be formed through the top of the bodyportion of the level and through the upper wall ofthe tube 3, as shownin the drawings, so that the bulb maybe seen from the top when it is notpractical to see it from either side.

Having thus described my invention, I claim as new and desireto secureby Letters Patent- A leveling or plumbing instrument, consisting of abody portion having an opening therethrough, a tube arranged to t insaid opening and formed with a central sight-opening and uninterruptedopenings in its side walls which completely surround said sightopening,a bulb-tube inserted in the openings in the side walls, and cementfilling up said side-wall openings, as and forthe purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LOUIS DESMARAIS.

lVitncsses:

IRVING COHEN, IsAAc LAZARUS.

